The vote came after two hours of heated debate over Democrats’ motivations. The committee’s Democratic leadership insisted lawmakers are moving cautiously and responsibly before deciding whether to formally recommend articles of impeachment.

“This committee is engaged in an investigation that will allow us to determine whether to recommend articles of impeachment with respect to President Trump,” said Judiciary Committee Chairman Jerry Nadler, D-N.Y.

Nadler stressed that the committee’s investigation will go beyond charges that Trump obstructed justice during former special counsel Robert Mueller’s investigation into Russian election meddling. Democrats also intend to investigate allegations of “federal election crimes, self dealing, violations of the constitution’s emoluments clause and a failure to defend our nation from current and future attacks by foreign adversaries,” Nadler said.

More than half of the U.S. House Democrats have said they support moving ahead with a formal impeachment inquiry, according to a New York Timesreview. Michigan Rep. Justin Amash was the lone House Republican to endorse an impeachment inquiry, but he left the GOP in July, declaring himself an independent.

Republicans on the Judiciary Committee accused their colleagues of tip-toeing around launching impeachment proceedings, an issue that divides the Democratic caucus and that some moderate members fear could hurt the party’s messaging heading into 2020.

Reschenthaler called the Democrats’ move “nothing more than an inquiry into whether to start an inquiry.”

Committee Democrats shrugged off their colleagues’ criticisms about semantics and procedure.

“Yes, we are in an impeachment investigation,” Scanlon said. “Have you not been reading the proceedings? I don’t think there’s a question. It’s an investigation.”

Some have labeled the process an impeachment inquiry; others call it an impeachment investigation. “There’s no legal difference between these terms and I no longer care to argue about the nomenclature,” Nadler said. “The conduct under investigation poses a threat to our democracy. We have an obligation to respond to this threat and we are doing so.”